The registry has the keys: History, TypedURLs and Domains, which contain junk *.com sites. The entire key can be safely deleted, and once you exit regedit, the registry re-creates empty keys of the same name. Can this deletion feature be added to Regclean or A1Click?

   There are many keys called History and Domains in the registry.  Most of them do not contain junk *.com sites in them.  So you need to be more specific about them.
   RegVac has a section called the StashVac which has the TypedURLs in it and may have the others (there are hundreds of entries and I did not want to look through them).  If not, I don't mind adding them if I know more specifically where they are.  RegVac does also allow you to add items to the StashVac.

If you do a "find" for P3P in regedit, "History", etc. can be deleted; you're right, though. I took a closer look at Regvac. Thanks